QQ客服 官方微博 反馈留言

	脉冲电流法测量变压器局部放电的频带选择
	桂峻峰 ; 高文胜 ; 谈克雄 ; 吴振升 ; GUI Junfeng ; GAO Wensheng ; TAN Kexiong ; WU Zhensheng
	2010-06-10 ; 2010-06-10
关键词	局部放电 脉冲电流法 频带 partial discharge pulse current method freq uency band TM41
其他题名	Frequency Band of Pulse Current Method for the Measurement of PD in Transformer
中文摘要	为研究变压器局部放电测量的频带问题,通过模拟试验测量了放电信号。信号功率谱密度的分析表明, 典型窄脉冲放电信号能量主要集中在≤10MHz。测量系统带宽对放电信号幅值影响的研究表明,带宽≥12MHz后对信号幅值无明显改善,带宽可根据需要选为8～20MHz。; During the detection of partial discharge (PD) in transformer, it is necessary to select a proper frequency bandwidth of measu rement for improving quality of the detection. A suggested frequency range of PD measure3ment is presented in this paper. At first, an imitating experiment with typical narrow PD is carried out in an actual transformer. The imitative curren t of PD pulse is input into the winding at different positions, and response at measuring-terminal is detected so that the PD signal can be gained. Then the en ergy region of PD in transformer is studied by analyzing the power spectral dens ity of the signal. It is found that the energy descends significantly over 10 MH z in frequency domain. It indicates that the energy of PD centralizes in the fre quency below 10 MHz. Finally, the effect of frequency bandwidth of measuring dev ice on the amplitude of PD signal is studied. The PD signal is processed by a se ries of low-pass digital filters, so that influence of different measuring devi ces on signal can be simulated. It shows that the amplitude of the processed sig nal has less relationship with the filter when its upper frequency is over 12 MH z. It is presented that the band width of PD measuring device can be 8 to 20 MHz .
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/62824]
专题	清华大学
推荐引用方式 GB/T 7714	桂峻峰,高文胜,谈克雄,等. 脉冲电流法测量变压器局部放电的频带选择[J],2010, 2010.
APA	桂峻峰.,高文胜.,谈克雄.,吴振升.,GUI Junfeng.,...&WU Zhensheng.(2010).脉冲电流法测量变压器局部放电的频带选择..
MLA	桂峻峰,et al."脉冲电流法测量变压器局部放电的频带选择".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。